Stripper Rubber - The stripper rubber makes a seal between the pipe or kelly and the atmosphere. Our rubbers have one of the most unique features of the Pruitt Rotating Head. Our stripper rubber screws onto the bearing assembly via left handed threads. This design has proven to be superior to the conventional "bolt-on" style stripper rubber being used by other rotating head companies. Stripper rubbers are available in all sizes and for use with air, gas, water base mud or oil base mud drilling.